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In science class, groups set up a lever on a stand. They hang weights at different spots, watch the bar tilt up and down, and keep testing until it balances.自然課上,各組把槓桿架在支架上,在不同的位置掛上砝碼,看著橫桿上上下下傾斜,一直測試到它平衡為止。
Words to Know · 單字
Six Words from the Video影片裡的六個單字
lever/ˈlɛvər/槓桿
A lever is a simple machine.槓桿是一種簡單機械。
test/tɛst/測試
Let's test it one more time.我們再測試一次。
hang/hæŋ/掛
Hang the weight on the hook.把砝碼掛在勾子上。
balance/ˈbæləns/平衡
Now both sides are in balance.現在兩邊平衡了。
tilt/tɪlt/傾斜
The heavy side makes the bar tilt.比較重的那一邊會讓橫桿傾斜。
group/ɡruːp/小組
Each group has its own lever.每一組都有自己的槓桿。
Say It · 用句子說說看
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1
A lever can help us lift heavy things.
槓桿可以幫我們舉起重的東西。2
Hang a weight on each side.
在兩邊各掛一個砝碼。3
Look! Now the lever is balanced.
你看!現在槓桿平衡了。Matching Game · 單字配對小遊戲
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